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Speech Studio Text to Speech - Silence Not Working

Kika D 0 Reputation points
2025-12-23T17:34:12.06+00:00

I'm trying to add silence in my text to speech files (see image below), but the silence tags will not actually generate the specified silence where I input them when I preview the audio. The silence doesn't show up in the exported output either. Am I doing something wrong?

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Azure AI Speech
Azure AI Speech

An Azure service that integrates speech processing into apps and services.

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  1. IngallsPW1 41 Reputation points
    2026-03-12T13:31:19.62+00:00

    I can't even get it to add a silence. It just stays grayed out no matter what I highlight or where i place the cursor. The above suggestion did not help.

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  2. Anshika Varshney 9,335 Reputation points Microsoft External Staff Moderator
    2025-12-24T07:26:33.8466667+00:00

    Hey Kika D,

    Thank you for reaching out on the Microsoft Q&A.

    It sounds like you're having trouble getting silence to work correctly in your text-to-speech files. Here are a few things you can check:

    1. Using the Correct SSML Tags: Make sure you're using the <mstts:silence> tag correctly. Silence can only be applied at the beginning or end of the text, or between two adjacent sentences. If you're placing the tag in a location that doesn't meet these criteria, it might not work as expected.
    2. Syntax and Attributes: Verify that the attributes used with the <mstts:silence> element are correct. If the attributes are incorrect or unsupported, the silence might not be inserted. You can refer to the SSML document structure and events for more details.
    3. Export Settings: If the silence is appearing in the preview but not in the exported output, double-check the export settings or any limitations in the tool you’re using. Sometimes, certain configurations might not support all SSML features, which can cause issues.

    Reference Links:

    I Hope this helps. Do let me know if you have any further queries.


    If this answers your query, please do click Accept Answer and Yes for was this answer helpful.

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    Thank you!

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